28095720 has 32 divisors (see below), whose sum is σ = 84287520. Its totient is φ = 7492160.

The previous prime is 28095709. The next prime is 28095721. The reversal of 28095720 is 2759082.

It is not an unprimeable number, because it can be changed into a prime (28095721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116946 + ... + 117185.

It is an arithmetic number, because the mean of its divisors is an integer number (2633985).

Almost surely, 2^28095720 is an apocalyptic number.

28095720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28095720 is an abundant number, since it is smaller than the sum of its proper divisors (56191800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28095720 is a wasteful number, since it uses less digits than its factorization.

28095720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234145 (or 234141 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 28095720 is about 5300.5395951733. The cubic root of 28095720 is about 304.0045301726.

The spelling of 28095720 in words is "twenty-eight million, ninety-five thousand, seven hundred twenty".